Abstract: Disclosed are operation methods of electronic devices that perform short-range wireless communication. The method includes receiving a data packet from an outside, determining whether to send a response signal, based on valid information indicating validation of the received data packet, data check information indicating whether there are data to be transmitted to the outside, and flush information indicating whether a current sub-event is a last sub-event just before a flush point for the received data packet, in response to the received data packet, and sending the response signal in consideration of a result of the determining whether to send the response signal.